EP3927646B1 - Unité de levage à commande électrique pour un engin de travail - Google Patents

Unité de levage à commande électrique pour un engin de travail Download PDF

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Publication number
EP3927646B1
EP3927646B1 EP19816285.1A EP19816285A EP3927646B1 EP 3927646 B1 EP3927646 B1 EP 3927646B1 EP 19816285 A EP19816285 A EP 19816285A EP 3927646 B1 EP3927646 B1 EP 3927646B1
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EP
European Patent Office
Prior art keywords
lifting
lifting unit
unit
working vehicle
lifting means
Prior art date
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Active
Application number
EP19816285.1A
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German (de)
English (en)
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EP3927646A1 (fr
Inventor
Jonas GRANSING
Per IDSÄTER
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Pmc Attachment AB
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Publication of EP3927646A1 publication Critical patent/EP3927646A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/144—Movements of forks relative to each other - independent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/125—Platforms; Forks; Other load supporting or gripping members rotatable about a longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/18—Load gripping or retaining means
    • B66F9/183—Coplanar side clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/24—Electrical devices or systems

Definitions

  • the invention relates to a lifting unit for a working vehicle and a working vehicle having such a lifting unit.
  • Conventional forklift trucks customarily carry a vertically oriented mast assembly to which a carriage assembly is mounted for elevational movement therealong to raise the load up to a desired elevation.
  • the carriage assembly is provided with a pair of spaced apart, generally parallel forks that overhang from the carriage assembly so as to take up the vertically exerted force of the load.
  • the up and down movement of the carriage assembly may be rendered effective by the combination of a lift jack and a lift chain associated therewith.
  • Side shift cylinders are also employed to have the carriage assembly move laterally, if appropriate. Lateral movement of the carriage assembly makes it possible for the forklift truck to readily access to the load even in a narrow working space and to permit unshipment of the lifted load on a precise location.
  • U.S. 3,477,600 discloses a forklift having a typical vertical frame for movement thereon of a standard carriage to which is attached the horizontal fork arms.
  • This particular forklift truck with its carriage as disclosed is one for picking up loads through the horizontal fork arms and providing the load support with the fork arms as the load is carried to its destination.
  • Well known mechanisms such as shown in the Sawyer patent are available for vertically positioning the carriage member on the vertical frame.
  • a lifting unit according to the preamble of claim 1 is known from JP S61 128293U .
  • a lifting unit for a working vehicle comprises a body connectable to the working vehicle at a loading area thereof, at least one lifting means connected to the body, and a drive unit connected to the at least one lifting means.
  • the lifting unit comprises two lifting means which are electrically driven and movable in lateral in relation to the body of the lifting unit.
  • the lifting unit will be extremely space-efficient since its components are electrically driven and no hydraulics are required. In turn, this will improve the sight for a potential driver of the working vehicle and thus increase the safety thereof.
  • the lifting unit is further advantageous in that it can be ordered as a separate kit and mounted onto an already existing forklift or other working vehicle in order to improve the overall safety of the same.
  • electrically driven components of this kind are controllable at a higher precision and easier to handle than components using hydraulic drive systems.
  • the body may comprise a rod to which the at least one lifting means is slidably arranged.
  • the at least one lifting means may slidably arranged to the rod via a ball bush.
  • the steel balls of the ball bush circulate on the ball track within the retainer while making rolling contact with the outer circumference of the shaft, so that the bush runs with an extremely low friction on the shaft. Since the friction is kept to a minimum, it is possible to use a less powerful motor to drive the at least one lifting means.
  • the two lifting means are movable, in lateral, simultaneously as well as in relation to each other.
  • the two lifting means may comprise two forks and/or two plates.
  • the drive unit comprises an electric motor, a driving gear, and a gear wheel, the gear wheel being in engagement with a gear rack.
  • the gear rack may be arranged on the body of the lifting unit.
  • the lifting unit may further comprise a control unit connected to the drive unit and a camera connected to the control unit.
  • the lifting device may be controlled by a control system, and the control system may be remotely operated by a driver.
  • the working vehicle comprises a main body, and a lifting unit according to the features of any one of the claims 1 to 9.
  • the body of the lifting unit is attached to the working vehicle at a side surface of the main body.
  • lateral is meant in a horizontal direction when the lifting unit is provided on a working vehicle which stands on the ground.
  • Fig. 1 to Fig. 4 illustrate an exemplary embodiment of a lifting unit 1 for a working vehicle 2.
  • the lifting unit 1 comprises a body 3 which is connectable to the working vehicle 2 at a loading area thereof, two lifting means 4 in the form of forks which are connected to the body, and a drive unit 8 connected to the lifting means 4.
  • the body 3 comprises a rod 5 connected to a frame 6.
  • the two lifting means 4 slidably arranged to the rod 5 via a ball bush 7.
  • the lifting means 4 are electrically driven by a drive unit 8 and movable in lateral in relation to the body 3 of the lifting unit 1.
  • each one of the two lifting means 4 comprises a separate drive unit 8.
  • Each drive unit 8 comprises an electric motor 9, a driving gear 10, and a gear wheel 11, respectively.
  • the gear wheels 11 of the drive units 8 are in engagement with a gear rack 12 that is arranged in the frame 6 of the body 3.
  • one single drive unit 8 may be used to drive both of the two lifting means 4.
  • the drive unit(s) 8 may be arranged somewhere on the lifting unit 1 or on the working vehicle 2.
  • the two lifting means 4 are constituted by two forks which are movable, in lateral, simultaneously as well as in relation to each other.
  • the lifting unit 1 is further equipped with a control unit (not shown) which is connected to the drive unit 8, and a camera (not shown) which is connected to the control unit.
  • the camera can be used to detect the extent of the load to be handled by the lifting unit 1 and by means of the control unit operate the lifting means 4 in order to adapt in relation to the load. This act can be performed either automatically or manually by an operator of the lifting unit 1.
  • the control unit is programmable and can be programmed to make the lifting unit 1 behave in a certain way based on the information provided by the camera. Accordingly, the lifting unit 1 is controllable by means of a control system, which control system can be operated either by means of an interface directly on the lifting unit 1 or remotely by an operator or driver of the working vehicle 2.
  • Fig. 5 illustrates another exemplary embodiment of a lifting unit 1 for a working vehicle 2.
  • the at least one lifting means 4 comprises two plates which are used to clamp the load between them.
  • Fig. 6 illustrates an exemplary embodiment of a working vehicle 2 for carrying a load.
  • the working vehicle 2 has a main body 13, and a lifting unit 1 according to the features above.
  • the body 3 of the lifting unit 1 is attached to the working vehicle 2 at a side surface 14 of the main body 13.
  • the camera on the lifting unit 1 detects a load to be handled by the lifting unit 1 and sends the information to the control unit which in turn adjusts the forks 4 in relation to the load.
  • the adjustment of the forks 4 means moving them from an idle position ( Fig. 1 and Fig. 3 ) to a working position ( Fig. 2 ).
  • the forks 4 are movable separately or simultaneously as a couple.
  • the load can be placed on the same. Thereafter, the load can be carried by the lifting unit 1 and transported from position A to position B by means of the working vehicle 2.
  • the lifting unit 1 provides for a longer and lower energy consumption and is also improved from an environmental perspective since no oil is required during use of the lifting unit 1.
  • the body 3 may be constituted by the rod 5 only.
  • the rod is attached directly to the working vehicle 2.
  • the lifting unit 1 Other options than the camera is naturally also possible for detecting the extent of the load to be handled by the lifting unit 1, such as a laser, a scanner or the like. In other word, the lifting unit 1 will somehow detect information about the load which thereafter is transferred to the lifting means 4 for adjustment in relation to the load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (10)

  1. Unité de levage (1) pour un engin de travail (2), comprenant :
    un corps (3) pouvant être relié à l'engin de travail (2) au niveau d'une zone de chargement de celui-ci,
    deux moyens de levage (4) reliés au corps (3), les deux moyens de levage (4) étant entraînés électriquement et mobiles latéralement par rapport au corps (3) de l'unité de levage (1), et
    une unité d'entraînement (8) reliée aux deux moyens de levage (4),
    les deux moyens de levage étant mobiles sur toute la largeur du corps (3), simultanément et l'un par rapport à l'autre,
    caractérisée en ce que l'unité d'entraînement (8) comprend un moteur électrique (9), un engrenage d'entraînement (10), et une roue dentée (11), la roue dentée (11) étant en prise avec une crémaillère (12).
  2. Unité de levage (1) selon la revendication 1, le corps (3) comprenant une tige (5) sur laquelle l'au moins un moyen de levage (4) est disposé de manière coulissante.
  3. Unité de levage (1) selon la revendication 2, au moins un moyen de levage (4) étant fixé de manière coulissante à la tige (5) par l'intermédiaire d'une douille à billes (7).
  4. Unité de levage (1) selon la revendication 1, les deux moyens de levage (4) comprenant deux fourches.
  5. Unité de levage (1) selon la revendication 1, les deux moyens de levage (4) comprenant deux plaques.
  6. Unité de levage (1) selon l'une quelconque des revendications précédentes, la crémaillère (12) étant disposée sur le corps (3) de l'unité de levage (1).
  7. Unité de levage (1) selon l'une quelconque des revendications précédentes, comprenant en outre une unité de commande reliée à l'unité d'entraînement (8) et une caméra reliée à l'unité de commande.
  8. Unité de levage (1) selon l'une quelconque des revendications précédentes, l'unité de levage (1) étant commandée par un système de commande.
  9. Unité de levage (1) selon la revendication 8, le système de commande étant actionné à distance par un conducteur.
  10. Engin de travail (2) destiné à transporter une charge, comprenant :
    un corps principal (13), et
    une unité de levage (1) selon l'une quelconque des revendications 1 à 9,
    le corps (3) de l'unité de levage (1) étant fixé à l'engin de travail (2) au niveau d'une surface latérale (14) du corps principal (13).
EP19816285.1A 2019-02-20 2019-12-04 Unité de levage à commande électrique pour un engin de travail Active EP3927646B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1950211A SE544583C2 (en) 2019-02-20 2019-02-20 Electrically operated lifting unit for a working vehicle
PCT/EP2019/083608 WO2020169225A1 (fr) 2019-02-20 2019-12-04 Unité de levage à commande électrique pour un engin de travail

Publications (2)

Publication Number Publication Date
EP3927646A1 EP3927646A1 (fr) 2021-12-29
EP3927646B1 true EP3927646B1 (fr) 2024-06-26

Family

ID=68806761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19816285.1A Active EP3927646B1 (fr) 2019-02-20 2019-12-04 Unité de levage à commande électrique pour un engin de travail

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Country Link
EP (1) EP3927646B1 (fr)
SE (1) SE544583C2 (fr)
WO (1) WO2020169225A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114953079B (zh) * 2022-06-30 2023-05-02 扬州工业职业技术学院 一种木材加工用的高效修枝去皮装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477600A (en) 1967-02-06 1969-11-11 Edward C Sawyer Hinged fork for fork-lift trucks
JPS61128293U (fr) * 1985-01-28 1986-08-12
JPS6439398U (fr) * 1987-09-04 1989-03-09
SE465033B (sv) * 1989-11-21 1991-07-15 Skellefteaa Staalteknik Manoevrerbart redskapsfaeste foer hopkoppling med en arbetsmaskin
JP4882176B2 (ja) * 2001-07-18 2012-02-22 株式会社豊田自動織機 産業車両における荷役支援報知装置及び産業車両
US20030118431A1 (en) * 2001-12-20 2003-06-26 Lou Marrero Fork lift apparatus and methods of lifting and positioning a load
CN201121114Y (zh) * 2007-10-29 2008-09-24 杭州浙力叉车有限公司 叉车货叉侧移装置
US7865286B1 (en) * 2010-05-01 2011-01-04 Hall Walter D Lift truck safety system
DE102010038663A1 (de) * 2010-07-29 2012-02-02 Griptech Gmbh Vorrichtung zur Aufnahme von Lasten
CA2772888A1 (fr) * 2012-03-22 2013-09-22 Rejean Vezina Fourches electriques
CN204588629U (zh) * 2015-04-30 2015-08-26 陈阿破 新型叉装机用侧移器
CN206901693U (zh) * 2017-06-22 2018-01-19 广州市森特自动化控制技术有限公司 一种自动装车装置
CN208071220U (zh) * 2018-02-02 2018-11-09 合肥远隆包装制品有限公司 一种可改变货叉宽度的液压叉车

Also Published As

Publication number Publication date
WO2020169225A1 (fr) 2020-08-27
SE1950211A1 (en) 2020-08-21
SE544583C2 (en) 2022-07-26
EP3927646A1 (fr) 2021-12-29

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